Balance cylinder structure

Abstract

The utility model relates to the technical field of balance cylinders, in particular to a balance cylinder structure. A plunger rod is slidably connected in the guide ring; a piston matched with the inner cavity of the main cylinder barrel is fixed on the plunger rod; a movable cylinder lug and a fixed cylinder lug are arranged at the two ends of the main cylinder barrel respectively. A second threaded hole is formed in the end, away from the plunger rod, of the main cylinder barrel. A first threaded hole is formed in one end, extending out of the main cylinder barrel, of the plunger rod; a first bolt in threaded connection with the first threaded hole is fixed on the movable cylinder lug; a second bolt in threaded connection with the second threaded hole is fixed on the fixed cylinder lug; the main cylinder barrel is connected with an air inlet assembly. When the hydraulic cylinder is used, the movable cylinder lug and the fixed cylinder lug are both of a threaded connection structure, so that the movable cylinder lug and the fixed cylinder lug with different inner hole diameters can be replaced according to the diameter of a rotating shaft connected with the movable cylinder lug and the fixed cylinder lug, and the hydraulic cylinder is more convenient to use.

Description

Technical Field

[0001] The utility model relates to the technical field of balancing cylinders, in particular to a balancing cylinder structure. Background Art

[0002] A balance cylinder is a type of nitrogen spring, commonly used in robotic arms that handle heavy objects. The cylinder is pre-filled with high-pressure nitrogen. When the robotic arm extends, it pulls on the piston rod, compressing the gas inside the balance cylinder and storing potential energy. This causes the piston structure to reset, allowing the object to be clamped. After gripping the object, the balance cylinder resets in the same direction as the robotic arm's lifting motion, releasing the potential energy and assisting the robotic arm in lifting the object.

[0003] In existing balancing cylinder structures, the plunger end and the end away from the plunger are respectively the connection ends. Both connection parts are formed with connectors for connecting to the outside. However, these connectors cannot be removed and replaced according to the corresponding external connectors, which is inconvenient to use. Utility Model Content

[0004] The purpose of the utility model is to provide a balancing cylinder structure in view of the defects and shortcomings of the existing technology.

[0005] In order to achieve the above purpose, the technical solution adopted by the utility model is:

[0006] The utility model discloses a balancing cylinder structure, which includes a main cylinder; one end of the main cylinder is sealed; the other end of the main cylinder is open; a guide ring is fixed to the open end surface of the main cylinder; a plunger rod is slidably connected in the guide ring; a piston matching the inner cavity of the main cylinder is fixed on the plunger rod;

[0007] The two ends of the master cylinder are respectively provided with a movable cylinder ear and a fixed cylinder ear; the end of the master cylinder away from the plunger rod is provided with a second threaded hole; the end of the plunger rod extending to the outside of the master cylinder is provided with a first threaded hole; a first bolt threadedly connected to the first threaded hole is fixed on the movable cylinder ear; a second bolt threadedly connected to the second threaded hole is fixed on the fixed cylinder ear; the master cylinder is connected to an air intake assembly.

[0008] Furthermore, bearings are connected inside the inner holes of the movable cylinder ear and the fixed cylinder ear.

[0009] Furthermore, the air intake assembly includes a nitrogen tank; a connecting pipe is connected between the inner cavity of the nitrogen tank and the inner cavity connected to the main cylinder; a valve body is connected to the nitrogen tank; a connecting seat fixed on the nitrogen tank is provided on the main cylinder; the position where the connecting pipe is connected to the main cylinder is set between the piston and the guide ring.

[0010] Furthermore, the nitrogen tank is connected to a pressure gauge; the nitrogen tank is provided with a protective cover; the protective cover is provided on a side of the pressure gauge away from the main cylinder.

[0011] Furthermore, a shrinkable dust cover is provided between the exterior of the first bolt and the outer surface of the master cylinder.

[0012] With the above-described structure, the present invention has the following beneficial effects: the inner holes of the movable and fixed cylinder ears are connected to an external connecting shaft; the movable cylinder ear is secured to the plunger rod via a first bolt connected to a first threaded hole, while the fixed cylinder ear is secured to the outer surface of the main cylinder via a second bolt connected to a second threaded hole. Because both the movable and fixed cylinder ears are threaded, they can be interchanged with those having different inner hole diameters depending on the diameter of the rotating shaft to which they are connected, making use more convenient. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a structural diagram of the utility model;

[0014] Figure 2 It is a cross-sectional view of the utility model;

[0015] Description of reference numerals:

[0016] 1. Movable cylinder ear; 101. First bolt; 2. Retractable dust cover; 3. Main cylinder;

[0017] 301, connecting seat; 302, second threaded hole; 4, muffler; 5, fixed cylinder ear;

[0018] 501, second bolt; 6, pressure gauge; 7, protective cover; 8, nitrogen tank; 801, valve body;

[0019] 9. Connecting pipe; 10. Plunger rod; 1001. First threaded hole; 11. Piston; 12. Guide ring;

[0020] 13. Bearings. DETAILED DESCRIPTION

[0021] The present invention will be further described below with reference to the accompanying drawings.

[0022] like Figures 1 to 2As shown, the utility model describes a balancing cylinder structure, which includes a main cylinder 3; one end of the main cylinder 3 is sealed; the other end of the main cylinder 3 is open; a guide ring 12 is fixed to the open end surface of the main cylinder 3; a plunger rod 10 is slidably connected in the guide ring 12; a piston 11 that matches the inner cavity of the main cylinder 3 is fixed on the plunger rod 10; the guide ring 12 is fixed to the main cylinder 3 by a retaining spring, and sealing rings are provided between the guide ring 12 and the plunger rod 10 and between the guide ring 12 and the inner wall of the main cylinder 3;

[0023] The master cylinder 3 is provided with a movable cylinder ear 1 and a fixed cylinder ear 5 at both ends; a second threaded hole 302 is provided at the end of the master cylinder 3 away from the plunger rod 10; a first threaded hole 1001 is provided at the end of the plunger rod 10 extending outside the master cylinder 3; a first bolt 101 is fixed to the movable cylinder ear 1 and threadedly connected to the first threaded hole 1001; a second bolt 501 is fixed to the fixed cylinder ear 5 and threadedly connected to the second threaded hole 302; the master cylinder 3 is connected to an air intake assembly;

[0024] The air intake assembly is used for air intake and exhaust of the main cylinder 3; a muffler 4 is provided on the main cylinder 3;

[0025] Both the movable cylinder lug 1 and the fixed cylinder lug 5 are designed as lifting rings, essentially identical to existing designs, and therefore not described in detail here. The inner bores of the movable cylinder lug 1 and the inner bores of the fixed cylinder lug 5 are connected to an external connecting shaft. The movable cylinder lug 1 is secured to the plunger rod 10 via a first bolt 101 connected to a first threaded hole 1001, while the fixed cylinder lug 5 is secured to the outer surface of the master cylinder 3 via a second bolt 501 connected to a second threaded hole 302. Because both the movable cylinder lug 1 and the fixed cylinder lug 5 are threaded, they can be interchanged with lugs of different inner bore diameters depending on the diameter of the rotating shaft to which they are connected, enhancing ease of use.

[0026] As a preferred embodiment of the present invention, bearings 13 are connected to the inner holes of the movable cylinder ear 1 and the fixed cylinder ear 5; the outer rings of the two bearings 13 are respectively fixed to the inner holes of the movable cylinder ear 1 and the fixed cylinder ear 5, and then the inner rings of the bearings 13 are connected to the external rotating shaft to realize the pivotal connection structure between the two ends and the external connecting parts.

[0027] As a preferred embodiment of the present invention, the air intake assembly includes a nitrogen tank 8; a connecting pipe 9 is connected between the inner cavity of the nitrogen tank 8 and the inner cavity connected to the master cylinder 3; a valve body 801 is connected to the nitrogen tank 8; a connecting seat 301 fixed on the nitrogen tank 8 is provided on the master cylinder 3; the position where the connecting pipe 9 is connected to the master cylinder 3 is set between the piston 11 and the guide ring 12; the nitrogen tank 8 and the master cylinder 3 are connected through the connecting pipe 9, so that the internal air pressure of the nitrogen tank 8 and the master cylinder 3 are consistent; through the pressure equipment connected to the valve body 801, nitrogen can be pumped out of the nitrogen tank 8 to achieve the change of the air pressure of the nitrogen tank 8.

[0028] As a preferred embodiment of the present invention, the nitrogen tank 8 is connected to a pressure gauge 6; a protective cover 7 is provided on the nitrogen tank 8; the protective cover 7 is provided on the side of the pressure gauge 6 away from the main cylinder 3; the pressure gauge 6 is used to display the air pressure value inside the nitrogen tank 8.

[0029] As a preferred embodiment of the present invention, a shrinkable dust cover 2 is provided between the outer portion of the first bolt 101 and the outer surface of the main cylinder 3;

[0030] The retractable dust cover 2 has no essential difference from the prior art, so it will not be described in detail; the retractable dust cover 2 is coaxially arranged with the main cylinder 3 and is sleeved on the outside of the main cylinder 3. The end of the retractable dust cover 2 is sleeved on the first bolt 101 and fixed, and the end of the retractable dust cover 2 moves synchronously with the first bolt 101, so that the end of the plunger rod 10 extending to the outside of the guide ring 12 is always sleeved, which plays a dust-proof role.

[0031] The above description is only a preferred embodiment of the present invention. Therefore, any equivalent changes or modifications made according to the structure, features and principles described in the scope of the present invention patent application are included in the scope of the present invention patent application.

Claims

1. A balancing cylinder structure, comprising a main cylinder (3); one end of the main cylinder (3) is sealed; the other end of the main cylinder (3) is open; a guide ring (12) is fixed to the open end surface of the main cylinder (3); a plunger rod (10) is slidably connected in the guide ring (12); a piston (11) matching the inner cavity of the main cylinder (3) is fixed on the plunger rod (10); Its characteristics are: The two ends of the master cylinder (3) are respectively provided with a movable cylinder ear (1) and a fixed cylinder ear (5); the end of the master cylinder (3) away from the plunger rod (10) is provided with a second threaded hole (302); the end of the plunger rod (10) extending outside the master cylinder (3) is provided with a first threaded hole (1001); a first bolt (101) threadedly connected to the first threaded hole (1001) is fixed on the movable cylinder ear (1); a second bolt (501) threadedly connected to the second threaded hole (302) is fixed on the fixed cylinder ear (5); and the master cylinder (3) is connected to an air intake assembly.

2. A balancing cylinder structure according to claim 1, characterized in that: The inner holes of the movable cylinder ear (1) and the fixed cylinder ear (5) are both connected to bearings (13).

3. The balancing cylinder structure according to claim 1, characterized in that: The air intake assembly comprises a nitrogen tank (8); a connecting pipe (9) is connected between the inner cavity of the nitrogen tank (8) and the inner cavity connected to the main cylinder (3); a valve body (801) is connected to the nitrogen tank (8); a connecting seat (301) fixed to the nitrogen tank (8) is provided on the main cylinder (3); and the position where the connecting pipe (9) is connected to the main cylinder (3) is set between the piston (11) and the guide ring (12).

4. The balancing cylinder structure according to claim 3, characterized in that: The nitrogen tank (8) is connected to a pressure gauge (6); the nitrogen tank (8) is provided with a protective cover (7); the protective cover (7) is provided on a side of the pressure gauge (6) away from the main cylinder (3).

5. The balancing cylinder structure according to claim 1, characterized in that: A shrinkable dust cover (2) is sleeved between the outside of the first bolt (101) and the outer surface of the main cylinder (3).

Images